List of UK Jazz & Blues Albums Chart number ones of 2003

The UK Jazz & Blues Albums Chart is a record chart which ranks the best-selling jazz and blues albums in the United Kingdom. Compiled and published by the Official Charts Company, the data is based on each album's weekly physical sales, digital downloads and streams. In 2003, 52 charts were published with six albums at number one. The first number-one album of the year was Come Away with Me, the debut album by Norah Jones, which spent the first five weeks of the year atop the chart to finish off a run of 28 consecutive weeks at number one. The last number-one album of the year was Twentysomething, the third album by Jamie Cullum.

The most successful album on the UK Jazz & Blues Albums Chart in 2003 was Come Away with Me, which spent a total of 30 weeks at number one over three spells of five weeks from January to February, 19 weeks from February to June, and six weeks from August to October. The George Benson compilation The Very Best of George Benson: The Greatest Hits of All was number one for a single nine-week stretch between 29 June and 30 August, As Time Goes By: The Great American Songbook, Volume II by Rod Stewart spent five weeks atop the chart. Come Away with Me finished 2003 as the fifth best-selling album of the year in the UK.